I'm in the process of building a new race car - newer version of the ride I've been beating about the desert the past five years (see link in signature below). This vehicle is not really like regular racers - it's small, light and uses a belt drive CVT transmission setup. Think snowmobiles or Honda Pilots/Odysseys (not the minivans) I have some questions concerning my engine setup and where it would land in the SCORE and BITD rules. Engine: Yamaha RX1 Snowmobile engine Four cylinder, four stroke, 1000 cc - FIVE valves per cylinder - three intake, two exhaust. The engine's based on the Yamaha R1 crotch rocket bike. Fuel injection system - off the R1 bike. Four throttle bodies. Properly tuned, it makes about 160 hp and about 120 ft-lbs of torque. (not bad for a 1200 lb car) From what I've read in the SCORE and BITD rules, it sounds like, even though I'm down 800 ccs on displacement (two seater), the five valve setup shelves this engine. Does SCORE or BITD ever take a "special look" a particular setup and allow it? Does anyone think that this powerplant may be allowed to race in Class 1000? (Score calls it Class 10, right? - sorry, I don't have my SCORE handbook handy - I left it in Phoenix, I'm in Cincinnati...) I really want to step up from Whiplash and come join you guys in SCORE and BITD, but I want to remain in "Class 10". By the rules, I could run Class 1, but the idea of having to leave the line with the bigger cars scares me for the time being. (and I don't think I'd have a snowball's chance...) Thanks in advance.